Carbon-paper-conserving device



May 6 1924. 1,492,831

A. c. CARTER CARBON PAPER CONSERVING DEVICE Filed Nov. 2, 1922 2 Sheets-Sheet l nv VEN re? ALaEs-r C CARTER ATTGENEY May 6 1924. 1,492,831

A. C. CARTER CARBON PAPER CONSERVING DEVICE Filed Nov. 2, 1922 2 Sheets-Sheet 2 I /NVE/V 0R ALBERT C CARTER A 7' TERA/E Y Patented May 6, 1924.

' UNITED STATES PATENT oFFicE.

ALBERT G. CARTER, OF N ORWOOD, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE CHAMPION CONSERVER COMPANY, OF CINCINNATI, OHIO.

CARBON-PAPER-CONSERVING DEVICE.

Application filed November 2, 1922. Serial No. 598,505.

To all whom it may concern:

Be it known that I, ALBERT C. CARTER, a citizen of the United States, residing at Norwood, in the county of Hamilton and State of Ohio, have invented certain new and useful Carbon-Paper-Conserving Devices, of which the following is a specification.

My invention relates to carbon paper conserving devices for use upon typewriters wherein the carbon paper is carried in continuous lengths wound up in a roll and adapted to be unwound therefrom and used as required.

Heretofore carbon papers have been employed in the form of sheets placed between other paper sheets of the same size for the purpose of producing a plurality of typewritten sheets at a single operation. It is seldom that the entire original sheet and copy is employed for written matter and, therefore, the upper and lower portions of the carbon sheet remain practically unused and are thus wasted while the central part only is utilized.

The object of my invention is to provide simple, efficient and convenient means whereby economical use of carbon paper is obtained. Other objects and advantages are obtained as herein set forth.

My invention consists in means attached to the carriage of a typewriter for carrying a roll of carbon paper, means for winding and unwinding said carbon paper and means for detachably mounting the carbon roll, reel and frame.

My invention also consists in the construction, combination and arrangement of parts as herein set forth and claimed.

In the drawings:

. Fig. 1 is a side elevation of a typewriter showing my invention mounted in operative position thereon;

Fig. 2 is a plan view of the same with the carbon roll and writing paper omitted;

Fig. 3 is a perspective view of one end of the support for the device;

Fig. 4 is a perspective view of the carbon roll;

Fig. 5 is a rearview of a typewriter showingamy invention mounted thereon;

ig. 6 is a perspective view of the device; Fig. 7. is a (perspective view of the inner side of one on or head of the reel; and

Fig. 8 is a section on the line 8-8 of Fig. 2.

In the embodiment of my invention as illustrated and which shows a preferred construction I provide a U-shaped frame 1 comprising horizontal base 2 and uprights 3 and 4 having in their 11 per ends bearings 5 and 6, respectively. Said U-shaped frame is supported in upright position by L-shaped braclgets 7 detachably mounted upon supports 8, respectively, by bolts 9 and wingnuts 10. Each bracket 7 is held in fixed relation with its support 8 by lug 11 on said bracket extending through hole 12 in said support. Supports 8 are each removably secured to rod 13 on carriage 14 of typewriter 15 by clamps 16 attached to said support by bolt 17 and wing-nut 18. Said clamp is held from turning on said bolt relative to said support by lug 19 on said support extending through hole 20 in said clamp. Supports 8 are reenforced and braced in fixed relation with each other by connecting bar 21 riveted to said supports at its respective ends. Reel 22 having spindle 23 with reduced axle 24 at one end and reduced axl 25 at the other end is adapted to be rotatably mounted in bearings 5 and 6, respectively, and to be detachably held therein by clip 26 extending partly over bearing 6 and by spring clip 27 normally fitting across bearing 5. Spring clip 27 is provided with upwardly curved end 28 and is slightly spaced apart from the upper end of upright 3 adjacent bearing 5 to permit of ready insertion of axle 24 therein. Stationary head 29 is mounted on spindle 23 by angles 30 and screws 31, respectively. Said head is provided with integrally formed inwardly extending resilient fingers 32 adapted to engage one end of hollow core 33 on which carbon roll 34 is wound. Said fingers serve to hold said carbon roll from rotating relative to said spindle. Detachable reel head 35 provided with tubular slotted stem 36 is adapted to frictionally receive and.

engage spindle 23 and is rovided with annular flange 37 which is adiipted to enter and support one end of hollow carbon supporting core 33. Axle 24 is provided with extension 38 to receive spring tension clip 39 mounted on car 40 and serves to prevent the carbon paper from unwinding except as do sired. Knob 41, preferably knurled, is mounted on the end of extension 38 and is used to manually turn reel 22 when feeding the carbon'paper into the typewriter or for the purpose of properly moving said carbon paper in either direction when ZtClJllStlIlg 1t to proper position for use or for removal of the reel from the frame. Anti-friction roller 42 on the free end of curved tension spring 43 supported by cross bar 44 mounted on uprights 3 and 4 is adapted to engage carbon roll 34 and hold it from unwinding except when drawn therefrom by turning knob 41 or handle 45 of platen 46.

The carbon sheet 47 is fed across carbon guide and rest 48 supported on arms 49 in front of and partly below the carbon roll 34 to hold the sheet in proper relative position with the part thereof which is being used in the typewriter. A serrated or saw tooth knife 50 is mounted on the lower edge of said rest and serves to conveniently sever the used carbon from the roll by simply drawing it upwardly thereacross.

The principal weight of the part of the device mounted on the reciprocating carriage b of the typewriter is supported by means of grooved wheels 51 carried by base 2 and ride on track rod 52 secured to the outer upper ends of supports 53 removably secured to the typewriter frame by screws 54.

Various parts of the attachment are preferably made of aluminum for the purpose of making an extremely light construction.

In using my invention the carbon sheet 47 of considerable length is wound upon hollow core 33 ready for use. The rolls of carbon may be formed of one, two or more plies or sheets depending upon the number of carbon typewritten copies desired.

To mount the carbon roll 34 which is wound upon hollow core 33 remove detachable head 35 from spindle 23 by simply pulling it endwise therefrom. Then insert spindie 23 in core 33 until stationary head 29 engages the end of the roll and core. When so adjusted fingers '32 will engage the inner wall of core 33 and prevent said roll from turning relative tothe spindle. Detachable head 35 is then replaced upon spindle 23 with its tubular stem frictionally engaging the end of said spindle and with its annular flange 37 extending into the end of hollow core 33 and forming a support therefor. Axle 25 is then inserted in bearing 6 with its end below clip 26 and axle 24 is then inserted in bearing 5 below spring cli 27. Spring tension clip 39 is then place over extension 38 to hold said reel from turning except when desired. The roll is then in position for use by drawing the carbon sheet 47 across rest 48 and feeding it forward by turning knob 41 for direct use in the typewriter which, as illustrated in Fig. 1, shows the original sheet and copy sheet inserted in per in position between the original and carbon copy sheet both original and second sheet are inserted beneath the platen and fed in a short distance leaving the bottom ends of the original and second sheets extending upwardly adjacent the carbon roll. The bottom end of the original sheet is inserted between the uprights 3 and '4 beneath the carbon roll. At this time the free end of carbon sheet 47 should extend forwardly just beyond the end of rest 48. The carbon is then fed forward by turning knob 41 un til the carbon paper is fed between the first and second sheets as far as it will go. Then momentarily press lightly against the sheets with one hand while turning handle 45 of the typewriter to rotate platen 46, thereby feeding the several sheets forward to the desired point at which the typewriting is to egin. .The typewriter may then be operated in the usual manner, the device being attached to the carriage, it will move therewith, and the carbon paper will unroll as the platen is actuated to imprint successive lines of writing.

If it is desired to start the writing near the top of a sheet, the first and second sheets, otherwise known as the original and carbon copy, respectively, should only be fed into the machine sufficiently to engage the platen whereupon the carbon paper is fed between said sheets by turning knob 41 and the feeding of all the sheets is continued by turning handle 45. If, however, it is desired to commence the writing upon the date line of a printed letter-head, as is customary, the first and second sheets should be fed through beneath and around the platen until they are more or less visible at the front thereof, de: pending upon the depth of the printed letter-head. In other words the first and second sheets should be fed forward to a point which will permit the carbon sheet to be inserted from the bottom of said sheets sufiioiently far to cover the top area of the second sheet where the typewriting is to start. This position will be readily ascertained by practice. From this point the entire letter is written the same as with carbon sheets corresponding in size to'the first and second sheets, with this difference, however, that the entire area of the carbon inserted between the first and second sheets is used from the end of the carbon 'sheet the full length of the writing, whether much or little so that there is no Waste of carbon at the tog per will be from one-half to three inches below the .top of the original and second sheets. This fact permits the typist to take hold of both typewritten sheets simultaneously and by pressing paper release lever 55 on the typewriter said sheets may be withdrawn from the typewriter and carbon sheet, leaving the latter in the position it occupied when the typewriting ceased, whereupon it is rewound upon the reel by manually turning knob 41. This places the same carbon paper in position for the next letter and the carbon will be repeatedly used until the carbon formula or surface of the carbon sheet has been sufficiently consumed to require the use of new carbon whereupon the worn part of the sheet is drawn upwardly across the knife and severed from the unused part of the roll.

My attachment is adapted to fit all standard types of typewriters and may be applied to any such typewriter by slight variation in the construction and arrangement of the supports to adapt them to the particular typewriter used.

Upon a typewriter which is stored in a limited space in a typewriter desk or otherwise when not in use the supporting frame may be detached in a few seconds by removing two wing-nuts and permitting said frame and roll to rest upon the platen and carriage of the typewriter. The same may be as quickly replaced.

An important advantage of my invention is that the consumption of carbon paper is reduced approximately fifty percent by its use. The carbon paper is inserted between the letter-heads and second sheets after said sheets are in the typewriter and this greatly enhances its value, as much time is saved by this method.

The stenographe-r knows that the carbon 4 paper can always be found in proper position on the typewriter and this saves much additional time since it is unnecessary to make frequent searches to find misplaced carbon sheets.

The carbon wound upon the roll is kept free from wrinkles or creases or curled edges which is so common in the use of ordinary carbon sheets. It is also cleanerto handle in this form since it is seldom necessary to touch it. By manually rotating the carbon roll, handling of the carbon paper is greatly reduced, thereby preventing the soiling of the hands and the consequent soiling of the writing sheets. Furthermore, it is preserved free from dust and dirt.

My novel device forms a ready means of utilizing every portion of the carbon paper and prevents the wasting of unused portions as heretofore, when the carbon paper has been used in sheets.

While I have illustrated and described a particular construction and arrangement I desire it to be understood that various modifications may be made without departing from the spirit or scope of the invention as defined in the claims.

lVhat I claim as new and desire to secure by Letters Patent is:

1.. In a carbon paper conserving device adapted tosupport a roll of carbon paper having a core, a reel comprising a spindle having axles, a head fixed 011 one end of said spindle and provided with integrally formed inturned resilient fingers adapted to engage and hold said core from rotating on said spindle, and a removable head on the other end of said spindle.

2. In a carbon paper conserving device adapted to support a roll of carbon paper having a core, a reel comprising a spindle having axles, a head fixed on one end of said spindle and provided with integrally formed inturned resilient fingers adapted to engage and hold said core from rotating on said spindle, a removable head on the other end of said spindle, an extension on one end of said spindle and a spring means adapted to engage said extension and hold it against accidental rotation.

3. In a carbon paper conserving device, a spindle having axles thereon, a fixed head on one end of said spindle and a removable head on the other end of said spindle, said removable head having a slotted tubular stem, an annular flange and a cylindrical formed member integral therewith adapted to receive a roll of carbon paper, substantially as set forth and for the purposes specified.

4. In a'carbon paper conserving device, a supporting frame having uprights provided with open top bearings, a clip adapted to partly cover one of said bearings, a spring clip adapted to extend across the other of said bearings, 'a'reel comprising a spindle having an axle adapted to engage one of said bearings beneath said clip and adapted to engage the other of said bearings below said spring clip, a fixed head on one end of said spindle and a removable head on the other end of said spindle and means for holding said spindle from turning except as desired.

5. In a carbon paper conserving device, a support mounted on the typewriter carriage, a support mounted on the typewriter frame, a supporting frame, a track rod, means on said supporting frame adapted to engage said track rod, a removable reel mounted on said support, an car on said frame, an extension on said reel, a spring on said ear and a clip on said spring adapted to engage said extension whereby said reel is held from unintentional or accidental rotation.

6. In a carbon paper conserving device, a U-shaped supporting frame having bearsaid bearings to hold one 0 said axles inposition and a spring clip extending across the other bearing and having an upturned end adapted to form a space between it and the upper bearing for convenient insertlon of the axle.

7. In a carbon paper conserving device for typewriting machines, a track rod supported on the typewriter frame, a carbon sup orting frame comprising a un1tary U-s aped member, means supporting the same from the typewriter carnage, antlfriction means carried by said member and en in said rod, means forsu ortin a cai n illon said U-shaped mdiiiber, 5nd means for preventing accidental rotation of said carbon roll.

8. In a carbon paper conserving device for typewriting machlnes, a frame mounted to travel with the typewriting machine carriage, means for mounting a carbon roll on said frame, a cross bar forming part of said frame, a spring finger connected to said cross bar, and rotatable means carried by said spring finger and bearing a ainst the carbon roll to prevent aceidenta rotation of the same.

ALBERT O. CARTER. 

